Economy September 11, 2026 09:49 AM

Hotter-than-expected CPI Reading Raises Odds of Fed Rate Increase Next Week

Core inflation surprises to the upside, energy prices surge past $100 and markets ramp up expectations for a 25-basis-point hike at the September policy meeting

By Avery Klein
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The August consumer price index report showed core inflation - excluding food and energy - rose 0.3% month-over-month, above economists' 0.2% forecast, and 2.4% year-over-year. Overall CPI measured 3.4% year-over-year. Coupled with a stronger-than-expected producer price index and oil climbing above $100 a barrel amid renewed Middle East hostilities, the data increases the likelihood that the Federal Reserve will raise its policy rate by 25 basis points at its September 15-16 meeting.

Hotter-than-expected CPI Reading Raises Odds of Fed Rate Increase Next Week
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Key Points

  • August core CPI rose 0.3% month-over-month, exceeding the 0.2% forecast, and was 2.4% year-over-year; overall CPI was 3.4% year-over-year.
  • A stronger-than-expected August producer price index and oil prices above $100 a barrel amid renewed Middle East hostilities add upward pressure to inflation readings.
  • Traders now assign about an 85% probability to a 25-basis-point Fed rate hike at the September 15-16 meeting, up from roughly 70% prior to the CPI report.

Hotter-than-anticipated inflation figures on Friday widened the gap between where many policymakers had hoped price pressures were heading and the path suggested by fresh data, setting the stage for what economists increasingly view as a likely interest-rate increase by the Federal Reserve next week.

The Bureau of Labor Statistics reported that core consumer prices - excluding food and energy - rose 0.3% in August from July, outpacing the 0.2% month-over-month increase economists had expected. On an annual basis, core CPI increased 2.4%, while headline consumer inflation stood at 3.4% year-over-year.

Those readings arrived alongside a stronger-than-expected August producer price index released on Thursday and a sharp rise in oil prices, which have climbed above $100 a barrel amid renewed hostilities in the Middle East. Taken together, the signals point to upside pressure on inflation measures the Fed watches most closely, and contrast with the cooling trend some policymakers had hoped was taking hold over the summer.

Policy implications

Nationwide Chief Economist Kathy Bostjancic framed the renewed increase in energy costs as a transmission risk: "The renewed march higher in oil, gasoline and diesel prices add to concerns that higher energy prices could spill over to other goods and services and inflation expectations," she wrote. Based on the latest figures, Bostjancic said she now expects the Fed to raise rates by 25 basis points at next week’s policy meeting.

The Federal Reserve has kept its policy rate in a 3.50%-3.75% range throughout this year. Last month Fed Chairman Kevin Warsh signaled the central bank could act if he lacked confidence that underlying inflation was moving to the Fed’s 2% target "clearly and at sufficient speed." Economists writing on Friday said the August data appears not to meet that standard and will likely reinforce concern among officials who had viewed June and July’s cooling as potentially durable.

Seema Shah, chief global strategist at Principal Asset Management, emphasized how the combination of August’s core CPI print, the spike in energy costs and persistent geopolitical tensions has shifted the policy outlook: "Today’s clean 0.3% core CPI print, combined with the sharp rise in energy prices and persistent tensions with Iran, all but locks in a Fed rate hike next week," she wrote. Shah added that after half a decade of inflation above target, policymakers may conclude that more than one hike will be necessary to restore price stability.

Market response and nuance in the data

Short-term interest-rate futures traders have moved to price in the policy shift: the probability of a quarter-point increase at the Fed’s September 15-16 meeting rose to about 85% after the report, up from roughly 70% before the data release. That repricing itself creates an additional incentive for the Fed to deliver a hike and avoid surprising market participants.

Analysts note, however, that part of the August core CPI rise was concentrated in a single component. Wireless services jumped 5.9% in the month, a significant outlier that inflated the overall core reading. "To be sure, the core rate would have been far more modest without this extraordinary rise," wrote Omair Sharif of Inflation Insights. He added a caveat about the Fed’s decision calculus: "That said, I am not sure the Fed can play that game right now with odds of a hike pushing to the 90%-ish zone."

Outlook

The combination of the CPI report, the firm PPI data and rising oil prices has shifted near-term expectations toward tighter policy. With markets now assigning a high probability to a 25-basis-point move, the Fed faces pressure to act in line with market pricing and the recent data. How the committee interprets the durability of the wireless-services increase, the pass-through from energy into broader inflation, and whether further hikes will be needed remains central to the coming discussion among policymakers.

Risks

  • Energy price resurgence - Oil above $100 a barrel and higher gasoline and diesel costs could spill into broader goods and services, raising inflation and affecting transportation and manufacturing sectors.
  • Data concentration - A sizable portion of the August core CPI increase was driven by a 5.9% jump in wireless services, introducing uncertainty about how persistent the overall core inflation uptick is and affecting communications and consumer-services analyses.
  • Policy uncertainty - Elevated odds of a September rate hike and market pricing shifts increase the risk of tighter financial conditions for interest-rate-sensitive sectors such as housing and consumer credit.

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